1% solar cells derived from ultrathin carbon nanotube photoabsorbing films

被引：78

作者：

Shea, Matthew J. ^{[1
]}

Arnold, Michael S. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 24期

关键词：

OPTICAL-PROPERTIES; ELECTRODES; PHOTODETECTORS; PHOTOVOLTAICS; SCAFFOLDS;

D O I：

10.1063/1.4811359

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using a carbon nanotube photoabsorbing film <5 nm in thickness, we demonstrate a 1% solar cell. Specifically, polymer wrapped, highly monochiral (7, 5) nanotubes are implemented in a bilayered heterojunction with acceptor C-60. The nanotubes drive 63% of the conversion, several times stronger than previously demonstrated. Peak external quantum efficiency (QE) of 43% at the nanotube bandgap (1055 nm) and power conversion efficiency of 0.95% and 1.02% at 1.0 and 1.5 suns, respectively, are achieved. The high internal QE from the ultrathin layers suggests that nanostructured or multijunction cells exploiting multiple nanotube layers will be many times more efficient. (C) 2013 AIP Publishing LLC.

引用

页数：5

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